20587378 has 16 divisors (see below), whose sum is σ = 35872704. Its totient is φ = 8678160.

The previous prime is 20587367. The next prime is 20587417. The reversal of 20587378 is 87378502.

It is a self number, because there is not a number n which added to its sum of digits gives 20587378.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11200 + ... + 12907.

It is an arithmetic number, because the mean of its divisors is an integer number (2242044).

Almost surely, 2^20587378 is an apocalyptic number.

20587378 is a deficient number, since it is larger than the sum of its proper divisors (15285326).

20587378 is a wasteful number, since it uses less digits than its factorization.

20587378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24177.

The product of its (nonzero) digits is 94080, while the sum is 40.

The square root of 20587378 is about 4537.3315946710. The cubic root of 20587378 is about 274.0734791477.

The spelling of 20587378 in words is "twenty million, five hundred eighty-seven thousand, three hundred seventy-eight".